INTERANNUAL FLUCTUATIONS IN POPULATIONS OF INVERTEBRATES WITH A SHORT LIFE CYCLE IN THE CONTINENTAL WATERS OF WESTERN SIBERIA AND PROBLEMS WITH THE EARLY FORECAST OF THEIR CATCH

The long-term data on commercial stocks of continental aquatic invertebrates: Artemia cysts and Gammarus are presented. The high variability of stocks in the inter-annual aspect were shown. It was found that mean annual productivity of reservoirs in the allocation of quotas of catch for a short life cycle invertebrates was inefficient due to the overestimation or underevaluation of the current state of the stocks of aquatic bioresources. Systematic error of this method expressed through the coefficient of oscillations for Artemia cysts is 300% (in average for all lakes) and 349% _ for Gammarus. The forecast of recommended catch which is issued for the year ahead can only be tentative and it must be supported by scientific justification of stocks and volumes of potential catch before harvesting in each lake. The recommended timing of survey of invertebrate stocks in the lakes of the South of Western Siberia before catch is provided in the article.

1. Лакин Г.Ф. Биометрия. М.: Высш. шк., 1990. 350 с.

2. Литвиненко Л.И. Определение общих допустимых уловов (ОДУ) водных беспозвоночных. Тюмень: ТГСХА, 2008. 36 с.

3. Мамаев С .А. Основные принципы методики исследования внутривидовой изменчивости древесных растений // Тр. И-та экологии растений и животных. 1975. Вып. 94. Индивидуальная и и эколого-географическая изменчивость растений. С. 3-14.

4. Методические указания по определению общих допустимых уловов (ОДУ) цист жаброногого рачка Artemia. Тюмень: СибрыбНИИпроект, 2002. 25 с.

5. Минашкин В.Г. Статистика : учебник для вузов. М.: ИД Юрайт, 2012. 444 с.

6. Определение общих допустимых уловов (ОДУ) амфиподы Gammarus lacustris. Тюмень: Госрыбцентр, 2004. 17 с.